refactor: unify core pipeline logging with cs_agent logger

core/order_flow.py

@@ -1,10 +1,13 @@
 from __future__ import annotations
 
 import asyncio
+import logging
 from typing import TYPE_CHECKING, Optional
 from core.post_ops import record_deal_success
 from core.order_helpers import parse_order_info
 
+logger = logging.getLogger("cs_agent")
+
 if TYPE_CHECKING:
     from core.pydantic_ai_agent import AgentResponse, ConversationState, CustomerMessage, CustomerServiceAgent
 
@@ -53,9 +56,9 @@ async def handle_order_notification(
                 )
             )
         except Exception as e:
-            print(f"[Agent] 触发作图失败: {e}")
+            logger.exception("[Agent] 触发作图失败: %s", e)
     elif not customer_text:
-        print(f"[Agent] 订单通知静默（{pay_status or order_status}），跳过回复")
+        logger.info("[Agent] 订单通知静默（%s），跳过回复", pay_status or order_status)
         return AgentResponse(reply="", should_reply=False, need_transfer=False)
 
     return None